--- /dev/null 2018-01-11 13:49:44.000000000 -0800 +++ new/test/jdk/java/io/OutputStream/NullOutputStream.java 2018-01-11 13:49:44.000000000 -0800 @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +import java.io.IOException; +import java.io.OutputStream; +import org.testng.annotations.AfterGroups; +import org.testng.annotations.BeforeGroups; +import org.testng.annotations.Test; +import static org.testng.Assert.*; + +/* + * @test + * @bug 4358774 + * @run testng NullOutputStream + * @summary Check for expected behavior of OutputStream.nullOutputStream(). + */ +public class NullOutputStream { + private static OutputStream openStream; + private static OutputStream closedStream; + + @BeforeGroups(groups="open") + public static void openStream() { + openStream = OutputStream.nullOutputStream(); + } + + @BeforeGroups(groups="closed") + public static void openAndCloseStream() { + closedStream = OutputStream.nullOutputStream(); + try { + closedStream.close(); + } catch (IOException e) { + fail("Unexpected IOException"); + } + } + + @AfterGroups(groups="open") + public static void closeStream() { + try { + openStream.close(); + } catch (IOException e) { + fail("Unexpected IOException"); + } + } + + @Test(groups="open") + public static void testOpen() { + assertNotNull(openStream, + "OutputStream.nullOutputStream() returned null"); + } + + @Test(groups="open") + public static void testWrite() { + try { + openStream.write(62832); + } catch (IOException e) { + fail("Unexpected IOException"); + } + } + + @Test(groups="open") + public static void testWriteBII() { + try { + openStream.write(new byte[] {(byte)6}, 0, 1); + } catch (Exception e) { + fail("Unexpected IOException"); + } + } + + @Test(groups="closed") + public static void testWriteClosed() { + try { + closedStream.write(62832); + fail("Expected IOException not thrown"); + } catch (IOException e) { + } + } + + @Test(groups="closed") + public static void testWriteBIIClosed() { + try { + closedStream.write(new byte[] {(byte)6}, 0, 1); + fail("Expected IOException not thrown"); + } catch (IOException e) { + } + } +}